public DataTable ToDataTable(DataRow[] rows)
    {
        if (rows == null || rows.Length == 0) return null;
        DataTable tmp = rows[0].Table.Clone();  // 复制DataRow的表结构
        foreach (DataRow row in rows)
            tmp.Rows.Add(row);  // 将DataRow添加到DataTable中
        return tmp;
    }

DataRow[]转换DataTable